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Nationwide Roof Surveys, Electronic Leak Detection and Integrity Testing

Electronic Detection

Earth Leakage Leak Detection

Earth Leakage Roof Testing

Often referred to as the “wet test”, this method is ideal for use on any flat or low-pitched roof to identify defects in exposed membrane or ballasted systems without the need to remove ballast (loose stone chippings, paving slabs, landscaped).

This test is performed in wet conditions (rainfall) or with a hosed down wetted test area.

MethodA pulse generator emits pulses with a voltage of 40V which are conducted onto the roof structure via a wire ring circuit. Since all roof membranes are more or less non-conducting, the electrical pulse chooses a path across the moisture to where the leak is located and then flows over the damp roof in all directions to reach the ring circuit.

We can now determine the currents direction of flow and trace it back to its source. This source is exactly the spot where moisture is penetrating the roof membrane.

Holiday Detector Test

Holiday Detector Test Kit

Often referred to as the “dry test”. This method is ideal for use on any flat or low pitched roof to identify defects in exposed membrane systems allowing for a quicker testing schedule identifying defects such as pinholes and punctures.

This test can only be performed in dry conditions

MethodThe detector delivers, via a phosphor-bronze brush, a stabilised D.C. output voltage across the non conductive waterproofing membrane under test. Detection of defects is by an audible tone and a visual spark from the search electrode (brush)